[ALSA] hda-codec - Disable shared stream on AD1986A
AD1986A has a hardware problem that it cannot share a stream with
multiple pins properly. The problem occurs e.g. when a volume is changed
during playback.
So far, hda-intel driver unconditionally assigns the stream to multiple
output pins in copy-front mode, and this should be avoided for AD1986A
codec.
The original fix patch was by zhejiang <zhe.jiang@intel.com>.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/pci/hda/patch_analog.c b/sound/pci/hda/patch_analog.c
index 0ee8ae4..196ad3c 100644
--- a/sound/pci/hda/patch_analog.c
+++ b/sound/pci/hda/patch_analog.c
@@ -957,6 +957,14 @@
break;
}
+ /* AD1986A has a hardware problem that it can't share a stream
+ * with multiple output pins. The copy of front to surrounds
+ * causes noisy or silent outputs at a certain timing, e.g.
+ * changing the volume.
+ * So, let's disable the shared stream.
+ */
+ spec->multiout.no_share_stream = 1;
+
return 0;
}